基于等效热网络法的控制棒驱动机构温升分析  

Temperature Rise Analysis of Control Rod Drive Mechanism Based on Equivalent Thermal Network Method

作　　者：徐奇伟[1] 刘升[1] 罗凌雁 于天达[2] 付国忠 杨云[1] 赵一舟[1] Xu Qiwei;Liu Sheng;Luo Lingyan;Yu Tianda;Fu Guozhong;Yang Yun;Zhao Yizhou(State Key Laboratory of Power Transmission Equipment Technology,Chongqing University,Chongqing,400044,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]重庆大学输变电装备技术全国重点实验室,重庆400044 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2024年第5期199-205,共7页Nuclear Power Engineering

基　　金：国防科技工业核动力技术创新中心项目(HDLCXZX-2021-ZH-016)。

摘　　要：核反应堆中的控制棒驱动机构(CRDM)长期运行在高温、高压、高辐射的恶劣环境中,为有效预防其因温度过高而造成损坏,需要对CRDM内部组件进行温度预测与估计,以提高核反应堆的安全性与可靠性。本文提出一种基于等效热网络法的温度估计方法。首先计算得到温升分析中所需热源参数;然后解算不同区域中的热阻,构建CRDM的等效热网络模型,实现对CRDM温度的快速精确估计;最后利用有限元分析(FEA)方法对结果进行验证。验证结果表明,所提出的CRDM温度估计方法具有较高的精度,可为后续新型结构设计和可靠性分析提供理论依据。The Control Rod Drive Mechanism(CRDM)in nuclear reactor operates in the harsh environment of high temperature,high pressure,and high radiation for a long time.In order to effectively prevent the damage caused by excessive temperature,it is necessary to predict and estimate the temperature of internal components of CRDM to improve the safety and reliability of nuclear reactor.This paper proposes a temperature estimation method based on the equivalent thermal network method.First,the heat source parameters required for the temperature rise analysis are calculated.Then,the thermal resistances in different regions are solved to construct an equivalent thermal network model of the CRDM,enabling rapid and accurate estimation of the CRDM temperature.Finally,the results are validated using Finite Element Analysis(FEA).The validation results show that the proposed CRDM temperature estimation method has high accuracy,providing a theoretical basis for subsequent novel structural design and reliability analysis.

关 键 词：控制棒驱动机构(CRDM) 等效热网络法 温度估计 有限元分析(FEA) 

分 类 号：TL364[核科学技术—核技术及应用]